/*
   Bacula(R) - The Network Backup Solution

   Copyright (C) 2000-2025 Kern Sibbald

   The original author of Bacula is Kern Sibbald, with contributions
   from many others, a complete list can be found in the file AUTHORS.

   You may use this file and others of this release according to the
   license defined in the LICENSE file, which includes the Affero General
   Public License, v3.0 ("AGPLv3") and some additional permissions and
   terms pursuant to its AGPLv3 Section 7.

   This notice must be preserved when any source code is
   conveyed and/or propagated.

   Bacula(R) is a registered trademark of Kern Sibbald.
*/
/* 
 *  Written by James Harper, July 2010
 *  
 *  Used only in "old Exchange plugin" now deprecated.
 */

#include "exchange-fd.h"

storage_group_node_t::storage_group_node_t(char *name, node_t *parent_node) : node_t(name, NODE_TYPE_STORAGE_GROUP, parent_node)
{
   ibi = NULL;
   store_node = NULL;
   current_dbi = 0;
   restore_environment = NULL;
   saved_log_path = NULL;
   next = NULL;
}

storage_group_node_t::~storage_group_node_t()
{
/*
   safe_delete(dbi_node);
   safe_delete(file_node);
*/
}

bRC
storage_group_node_t::startBackupFile(exchange_fd_context_t *context, struct save_pkt *sp)
{
   HRESULT result;
   int len;
   WCHAR *tmp_logfiles, *tmp_logfile_ptr;
   char *tmp;

   for(;;)
   {
      _DebugMessage(100, "startBackupNode_STORAGE_GROUP state = %d, name = %s\n", state, name);
      switch(state)
      {
      case 0:
         current_dbi = 0;
         store_node = NULL;
         logfile_ptr = NULL;
         if (context->job_level == 'F')
         {
            _DebugMessage(100, "Calling HrESEBackupSetup (BACKUP_TYPE_FULL)\n");
            result = HrESEBackupSetup(hccx, ibi->hInstanceId, BACKUP_TYPE_FULL);
            state = 1;
         }
         else
         {
            _DebugMessage(100, "Calling HrESEBackupSetup (BACKUP_TYPE_LOGS_ONLY)\n");
            result = HrESEBackupSetup(hccx, ibi->hInstanceId, BACKUP_TYPE_LOGS_ONLY);
            if (context->accurate)
               state = 1;
            else
               state = 2;
         }
         if (result != 0)
         {
            _JobMessage(M_FATAL, "HrESEBackupSetup failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
            state = 999;
            return bRC_Error;
         }
         break;
      case 1:
         if (context->path_bits[level + 1] == NULL)
         {
            _DebugMessage(100, "No specific database specified - backing them all up\n");
            DATABASE_BACKUP_INFO *dbi = &ibi->rgDatabase[current_dbi];
            char *tmp = new char[wcslen(dbi->wszDatabaseDisplayName) + 1];
            wcstombs(tmp, dbi->wszDatabaseDisplayName, wcslen(dbi->wszDatabaseDisplayName) + 1);
            store_node = new store_node_t(tmp, this);
            store_node->dbi = dbi;
            store_node->hccx = hccx;
            context->current_node = store_node;
         }
         else
         {
            DATABASE_BACKUP_INFO *dbi = NULL;
            char *tmp = NULL;
            for (current_dbi = 0; current_dbi < ibi->cDatabase; current_dbi++)
            {
               dbi = &ibi->rgDatabase[current_dbi];
               char *tmp = new char[wcslen(dbi->wszDatabaseDisplayName) + 1];
               wcstombs(tmp, dbi->wszDatabaseDisplayName, wcslen(dbi->wszDatabaseDisplayName) + 1);
               if (stricmp(tmp, context->path_bits[level + 1]) == 0)
                  break;
               safe_delete(tmp);
            }
            if (current_dbi == ibi->cDatabase)
            {
               _JobMessage(M_FATAL, "Invalid Database '%s'\n", context->path_bits[level + 1]);
               return bRC_Error;
            }
            store_node = new store_node_t(tmp, this);
            _DebugMessage(100, "Database name = %s\n", store_node->name);
            safe_delete(tmp);
            store_node->hccx = hccx;
            store_node->dbi = dbi;
            context->current_node = store_node;
         }
         return bRC_OK;
      case 2:
         _DebugMessage(100, "Calling HrESEBackupGetLogAndPatchFiles\n");
         result = HrESEBackupGetLogAndPatchFiles(hccx, &tmp_logfiles);
         if (result != 0)
         {
            _JobMessage(M_FATAL, "HrESEBackupGetLogAndPatchFiles failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
            return bRC_Error;
         }
         for (len = 0, tmp_logfile_ptr = tmp_logfiles; *tmp_logfile_ptr != 0; tmp_logfile_ptr += wcslen(tmp_logfile_ptr) + 1)
         {
            len += wcslen(tmp_logfile_ptr) + 1;
         }
         logfiles = new WCHAR[len + 1];
         logfile_ptr = logfiles;
         for (tmp_logfile_ptr = tmp_logfiles; *tmp_logfile_ptr != 0; tmp_logfile_ptr += wcslen(tmp_logfile_ptr) + 1)
         {
            // check file modification date
            HANDLE handle;
            FILETIME modified_time;
            //int64_t tmp_time;
            __int64 tmp_time;
            bool include_file;
            include_file = false;
            handle = INVALID_HANDLE_VALUE;
            if (context->job_since == 0)
               include_file = true;
            if (!include_file)
            {
               handle = CreateFileW(tmp_logfile_ptr, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
               if (handle == INVALID_HANDLE_VALUE)
               {
                  //_JobMessage(M_WARNING, "Could not open '%S' to check last modified date (0x%08x), including anyway\n", tmp_logfile_ptr, GetLastError());
                  include_file = true;
               }
            }
            if (!include_file)
            {
               if (GetFileTime(handle, NULL, NULL, &modified_time) == 0)
               {
                  //_JobMessage(M_WARNING, "Could not check last modified date for '%S' (0x%08x), including anyway\n", tmp_logfile_ptr, GetLastError());
                  include_file = true;
               }
            }
            if (!include_file)
            {
               tmp_time = (((int64_t)modified_time.dwHighDateTime) << 32) | modified_time.dwLowDateTime;
               tmp_time -= 116444736000000000LL;
               tmp_time /= 10000000;
               if (tmp_time > context->job_since)
               {
                  include_file = true;
               }
            }
            if (include_file)
            {
               memcpy(logfile_ptr, tmp_logfile_ptr, (wcslen(tmp_logfile_ptr) + 1) * 2);
               logfile_ptr += wcslen(logfile_ptr) + 1;
               //_DebugMessage(100, "Including file %S\n", logfile_ptr);
            }
#if 0
/* this is handled via checkFile now */
            else
            {
               if (context->accurate) {
                  tmp = new char[strlen(full_path) + wcslen(tmp_logfile_ptr) + 1];
                  strcpy(tmp, full_path);
                  wcstombs(tmp + strlen(full_path), tmp_logfile_ptr, wcslen(tmp_logfile_ptr) + 1);
                  bfuncs->setBaculaValue(context->bpContext, bVarFileSeen, (void *)tmp);
                  delete tmp;
               }
            }
#endif

            if (handle != INVALID_HANDLE_VALUE)
               CloseHandle(handle);

         }
         *logfile_ptr = 0;
         logfile_ptr = logfiles;
         state = 3;
         break;
      case 3:
         tmp = new char[wcslen(logfile_ptr) + 1];
         wcstombs(tmp, logfile_ptr, wcslen(logfile_ptr) + 1);
         file_node = new file_node_t(tmp, this);
         delete tmp;
         file_node->hccx = hccx;
         file_node->filename = logfile_ptr;
         context->current_node = file_node;
         return bRC_OK;
      case 4:
         time_t now = time(NULL);
         sp->fname = full_path;
         sp->link = full_path;
         _DebugMessage(100, "fname = %s\n", sp->fname);
         sp->statp.st_mode = 0700 | S_IFDIR;
         sp->statp.st_ctime = now;
         sp->statp.st_mtime = now;
         sp->statp.st_atime = now;
         sp->statp.st_size = 0;
         //sp->statp.st_blocks = 0;
         sp->type = FT_DIREND;
         return bRC_OK;
      }
   }
}

bRC
storage_group_node_t::endBackupFile(exchange_fd_context_t *context)
{
   HRESULT result;
   bRC retval = bRC_Error;

   _DebugMessage(100, "endBackupNode_STORAGE_GROUP state = %d\n", state);

   switch(state)
   {
   case 0:
      // should never happen
      break;
   case 1:
      // free node->storage_group_node
      if (context->path_bits[level + 1] == NULL)
      {
         current_dbi++;
         if (current_dbi == ibi->cDatabase)
            state = 2;
      }
      else
         state = 2;
      retval = bRC_More;
      break;
   case 2:
      // should never happen
      break;
   case 3:
      safe_delete(file_node);
      logfile_ptr += wcslen(logfile_ptr) + 1;
      if (*logfile_ptr == 0)
         state = 4;
      retval = bRC_More;
      break;
   case 4:
      if (context->truncate_logs) {
         _DebugMessage(100, "Calling HrESEBackupTruncateLogs\n");
         result = HrESEBackupTruncateLogs(hccx);
         if (result != 0) {
            _JobMessage(M_FATAL, "HrESEBackupTruncateLogs failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
         } else {
            _JobMessage(M_INFO, "Truncated database logs for Storage Group %s\n", name);
         }
      } else {
         _JobMessage(M_INFO, "Did NOT truncate database logs for Storage Group %s\n", name);
      }
      _DebugMessage(100, "Calling HrESEBackupInstanceEnd\n");
      result = HrESEBackupInstanceEnd(hccx, ESE_BACKUP_INSTANCE_END_SUCCESS);
      if (result != 0) {
         _JobMessage(M_FATAL, "HrESEBackupInstanceEnd failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
         return bRC_Error;
      }
      retval = bRC_OK;
      context->current_node = parent;
      break;
   }
   return retval;
}

bRC
storage_group_node_t::createFile(exchange_fd_context_t *context, struct restore_pkt *rp)
{
   HRESULT result;
   int len;

   _DebugMessage(0, "createFile_STORAGE_GROUP state = %d\n", state);

   if (strcmp(context->path_bits[level], name) != 0) {
      _DebugMessage(0, "Different storage group - switching back to parent\n", state);
      saved_log_path = new WCHAR[wcslen(restore_environment->m_wszRestoreLogPath) + 1];
      wcscpy(saved_log_path, restore_environment->m_wszRestoreLogPath);
      _DebugMessage(100, "Calling HrESERestoreSaveEnvironment\n");
      result = HrESERestoreSaveEnvironment(hccx);
      if (result != 0) {
         _JobMessage(M_FATAL, "HrESERestoreSaveEnvironment failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
         state = 999;
         rp->create_status = CF_CREATED;
         return bRC_OK;
      }
      _DebugMessage(100, "Calling HrESERestoreClose\n");
      result = HrESERestoreClose(hccx, RESTORE_CLOSE_NORMAL);
      if (result != 0) {
         _JobMessage(M_FATAL, "HrESERestoreClose failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
         state = 999;
         rp->create_status = CF_CREATED;
         return bRC_OK;
      }
      context->current_node = parent;
      return bRC_OK;
   }
   if (saved_log_path != NULL) {
      _DebugMessage(0, "Calling HrESERestoreReopen\n");
      result = HrESERestoreReopen(context->computer_name, service_name, saved_log_path, &hccx);
      if (result != 0) {
         _JobMessage(M_FATAL, "HrESERestoreReopen failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
         state = 999;
         saved_log_path = NULL;
         rp->create_status = CF_CREATED;
         return bRC_OK;
      }
      _DebugMessage(0, "Calling HrESERestoreGetEnvironment\n");
      result = HrESERestoreGetEnvironment(hccx, &restore_environment);
      if (result != 0) {
         _JobMessage(M_FATAL, "HrESERestoreGetEnvironment failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
         state = 999;
         saved_log_path = NULL;
         rp->create_status = CF_CREATED;
         return bRC_OK;
      }
      saved_log_path = NULL;
   }

   for (;;) {
      switch (state) {
      case 0:
         if (context->path_bits[level + 2] == NULL) {
            _JobMessage(M_ERROR, "Unexpected log file '%s%s' - expecting database\n", full_path, context->path_bits[level + 1]);
            state = 999;
            break;
         }
         service_name = new WCHAR[strlen(parent->name) + 1];
         storage_group_name = new WCHAR[strlen(name) + 1];
         mbstowcs(service_name, parent->name, strlen(parent->name) + 1);
         mbstowcs(storage_group_name, name, strlen(name) + 1);
         _DebugMessage(0, "Calling HrESERestoreOpen\n");
         result = HrESERestoreOpen(context->computer_name, service_name, storage_group_name, NULL, &hccx);
         if (result != 0) {
            _JobMessage(M_FATAL, "HrESERestoreOpen failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
            state = 999;
            break;
         }
         _DebugMessage(0, "Calling HrESERestoreGetEnvironment\n");
         result = HrESERestoreGetEnvironment(hccx, &restore_environment);
         if (result != 0) {
            _JobMessage(M_FATAL, "HrESERestoreGetEnvironment failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
            state = 999;
            break;
         }
         state = 1;
         break;
      case 1:
         if (context->path_bits[level + 2] == NULL) {
            state = 2;
            break;
         }
         store_node = new store_node_t(bstrdup(context->path_bits[level + 1]), this);
         store_node->hccx = hccx;
         context->current_node = store_node;
         return bRC_OK;
      case 2:
         if (context->path_bits[level + 2] != NULL) {
            _JobMessage(M_ERROR, "Unexpected file '%s'\n", full_path);
            state = 999;
            break;
         }
         if (context->path_bits[level + 1] == NULL) {
            state = 3;
            break;
         }
         state = 2;
         file_node = new file_node_t(bstrdup(context->path_bits[level + 1]), this);
         file_node->hccx = hccx;
         int i;
         for (i = strlen(file_node->name) - 1; i >= 0; i--) {
            if (file_node->name[i] == '\\') {
               i++;
               break;
            }
         }
         len = wcslen(restore_environment->m_wszRestoreLogPath) + strlen(file_node->name + i) + 1 + 1;
         file_node->filename = new WCHAR[len];
         wcscpy(file_node->filename, restore_environment->m_wszRestoreLogPath);
         wcscat(file_node->filename, L"\\");
         mbstowcs(&file_node->filename[wcslen(file_node->filename)], file_node->name + i, strlen(file_node->name + i) + 1);
         context->current_node = file_node;
         return bRC_OK;
      case 3:
         if (rp->type != FT_DIREND) {
            _JobMessage(M_ERROR, "Unexpected file '%s'\n", full_path);
            state = 999;
            break;
         }
         // must be the storage group node
         _DebugMessage(100, "Calling HrESERestoreSaveEnvironment\n");
         result = HrESERestoreSaveEnvironment(hccx);
         if (result != 0) {
            _JobMessage(M_FATAL, "HrESERestoreSaveEnvironment failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
            state = 999;
            break;
         }

         _DebugMessage(100, "Calling HrESERestoreComplete\n");
         result = HrESERestoreComplete(hccx, restore_environment->m_wszRestoreLogPath,
            restore_environment->m_wszRestoreLogPath, storage_group_name, ESE_RESTORE_COMPLETE_ATTACH_DBS);
         if (result != 0) {
            _JobMessage(M_FATAL, "HrESERestoreComplete failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
            _DebugMessage(100, "Calling HrESERestoreClose\n");
            result = HrESERestoreClose(hccx, RESTORE_CLOSE_NORMAL);
            state = 999;
            break;
         } else {
            _JobMessage(M_INFO, "Storage Group '%s' restored successfully\n", name);
         }

         _DebugMessage(100, "Calling HrESERestoreClose\n");
         result = HrESERestoreClose(hccx, RESTORE_CLOSE_NORMAL);
         if (result != 0) {
            _JobMessage(M_FATAL, "HrESERestoreClose failed with error 0x%08x - %s\n", result, ESEErrorMessage(result));
            state = 999;
            break;
         }

         rp->create_status = CF_CREATED;
         return bRC_OK;
      case 999:
         rp->create_status = CF_CREATED;
         return bRC_OK;
      }
   }
}

bRC
storage_group_node_t::endRestoreFile(exchange_fd_context_t *context)
{
   _DebugMessage(0, "endRestoreFile_STORAGE_GROUP state = %d\n", state);
   switch (state) {
   case 0:
      return bRC_Error;
   case 1:
      return bRC_OK;
   case 2:
      return bRC_OK;
   case 3:
      context->current_node = parent;
      return bRC_OK;
   case 999:
      context->current_node = parent;
      return bRC_OK;
   }

   return bRC_Error;
}
